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If you're wondering why you would run an aluminum block, here's the reason--they're light! It weighs only 92 pounds, while a GM Bow Tie cast-iron block is 202 pounds. The aluminum block comes with doweled, four-bolt main caps and is meticulously machined for GM by Schwartz Machine.
Meticulous Mouse For The Mule

If you're wondering why you would run an aluminum block, here's the reason--they're light! It weighs only 92 pounds, while a GM Bow Tie cast-iron block is 202 pounds. The aluminum block comes with doweled, four-bolt main caps and is meticulously machined for GM by Schwartz Machine.  View Related Article

 

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